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Finding the Fourth Proportional to 83,235.70, 124,744.20 and 73,831.60

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Solution

The fourth proportional to 83,235.70, 124,744.20 and 73,831.60 is: 110,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,235.70 : 124,744.20 = 73,831.60 : x
  2. Step 2: Convert to fraction form
    83,235.70/124,744.20 = 73,831.60/x
  3. Step 3: Cross multiply
    83,235.70x = 124,744.20 × 73,831.60
  4. Step 4: Simplify right side
    83,235.70x = 9,210,063,876.72
  5. Step 5: Solve for x
    x = 9,210,063,876.72/83,235.70
  6. Step 6: Final answer
    x = 110,650.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.